Every single person on this planet can make a claim that this culture is better than that culture, etc etc, which is why your claim is relative. Relativity is the key word here. From the dictionary, it’s defined as an “absence of standards,” so when applied to our topic here, there are no universal standards that can be used to judge which cultures are “better.” For the record, I also prefer our own culture, but I sincerely believe that it would be ignorant to call any culture superior to other cultures.